Table 4.

¹³C NMR spectroscopic data for 3–5

No.	3 a	4 a	5 b
1	28.2, CH2	16.9, CH2	26.7, CH2
2	64.4, CH	23.9, CH2	72.6, CH
3	139.6, CH	142.79/142.66, CH	138.5, CH
4	136.5, C	133.78/133.81, C	141.8, C
5	37.3, C	38.6, C	41.9, C
6	138.0, CH	83.30/83.18, CH	69.3, CH
7	120.8, CH	29.83/29.81, CH2	28.5, CH2
8	78.1, C	50.86/50.71, CH	41.3, CH
9	39.2, C	42.47/42.42, C	38.3, C
10	45.3, CH	41.31,41.40, CH	51.0, CH
11	39.4, CH2	148.96/148.77, CH	46.2, CH2
12	70.9, CH	119.72/119.85, CH	72.0, CH
13	125.7, C	160.66/160.63, C	126.0, C
14	108.3, CH	117.28/117.26, CH	109.9, CH
15	144.0, CH	170.92/170.87, C	145.0, CH
16	139.4, CH	97.54/97.46, CH	141.4, CH
17	167.3, C	177.61/177.56, C	178.3, C
18	166.6, C	166.5, C	169.9, C
19	30.3, CH3	26.9, CH3	29.7, CH3
20	23.1, CH3	19.15/19.12, CH3	23.5, CH3
OMe	51.9, CH3	51.8, CH3	52.4, CH3
CH3CO	21.1, CH3
CH3 CO	168.7, C
1′			103.6, CH
2′			75.0, CH
3′			78.0, CH
4′			71.6, CH
5′			77.9, CH
6′			62.7, CH2

^aMeasured in CDCl₃ (δ _C 77.0 ppm)

^bMeasured in methanol-d ₄ (δ _C 49.0 ppm)